<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>分类参数</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 头部警告区域 -->
      <el-alert
        show-icon
        title="注意:只允许为第三级分类设置相关参数"
        type="warning"
        :closable="false"
      >
      </el-alert>

      <!-- 选择商品分类的区域 -->
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类：</span>

          <!-- 选择商品分类的级联选择框 -->
          <el-cascader
            v-model="selectedCateKeys"
            :options="catelist"
            :props="cateProps"
            @change="handleChange"
          ></el-cascader>
        </el-col>
      </el-row>

      <!-- tab页签区域 -->
      <el-tabs v-model="activeName" @tab-click="handleClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addDialogVisible = true"
            >添加参数</el-button
          >

          <!-- 动态参数 -->
          <el-table :data="manyTableData" border stripe>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <!-- 循环渲染tag标签 -->
                <el-tag
                  closable
                  v-for="(item, i) in scope.row.attr_vals"
                  :key="i"
                  @close="handleClose(i,scope.row)"
                >
                  {{ item }}
                </el-tag>

                <!-- 点击添加tag标签 -->

                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                  >+ New Tag</el-button
                >


              </template>
            </el-table-column>

            <el-table-column type="index"></el-table-column>

            <el-table-column
              label="参数名称"
              prop="attr_name"
            ></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEditDialog(scope.row.attr_id)"
                  >编辑</el-button
                >
                <el-button
                  type="primary"
                  icon="el-icon-delete"
                  size="mini"
                  @click="removeParams(scope.row.attr_id)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>


        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addDialogVisible = true"
            >添加属性</el-button
          >
          <!-- 添加静态属性 -->
          <el-table :data="onlyTableData" border stripe>
              <el-table-column type="expand">
              <template slot-scope="scope">
                <!-- 循环渲染tag标签 -->
                <el-tag
                  closable
                  v-for="(item, i) in scope.row.attr_vals"
                  :key="i"
                  @close="handleClose(i,scope.row)"
                >
                  {{ item }}
                </el-tag>

                <!-- 点击添加tag标签 -->

                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                  >+ New Tag</el-button
                >


              </template>
            </el-table-column>


            <el-table-column type="index"></el-table-column>

            <el-table-column
              label="属性名称"
              prop="attr_name"
            ></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEditDialog(scope.row.attr_id)"
                  >编辑</el-button
                >
                <el-button
                  type="primary"
                  icon="el-icon-delete"
                  size="mini"
                  @click="removeParams(scope.row.attr_id)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <!-- 添加参数的对话框 -->
    <el-dialog
      :title="'添加' + titleText"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!-- 添加参数对话框 -->

      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="100px"
      >
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改参数对话框 -->
    <el-dialog
      :title="'修改' + titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 添加参数对话框 -->

      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
      >
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      catelist: [],
      cateProps: {
        expandTrigger: "hover",
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      //级联选择器的数组
      selectedCateKeys: [],
      activeName: "many", //被激活也签的名称
      manyTableData: [], //动态参数获取
      onlyTableData: [], //静态属性的获取
      addDialogVisible: false, //控制添加对话框关闭影藏
      addForm: {}, //添加参数的表单数据对象
      addFormRules: {
        attr_name: [
          { required: true, message: "请输入参数名称", trigger: "blur" },
        ],
      }, //验证规则
      editDialogVisible: false, //控制修改对话框的显示与隐藏
      editForm: {}, //修改的表单数据对象
      editFormRules: {
        attr_name: [
          { required: true, message: "请输入参数名称", trigger: "blur" },
        ],
      }, //验证规则
      // inputVisible:false,//控制按钮与文本框的切换显示
      // inputValue:'',//文本框中输入的内容


    };
  },
  created() {
    //   获取所有商品分类
    this.getCateList();
  },
  methods: {
    //   获取所有商品分类
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品分类失败！");
      }
      this.catelist = res.data;
    },
    // 级联选中变化触发
    async handleChange() {
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = [];
        return;
      }
      //根据所选分类的id 和当前所处的面板获取对应的参数
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        { params: { sel: this.activeName } }
      );

      if (res.meta.status !== 200) {
        return this.$$message.error("获取参数列表失败");
      }
      console.log(res.data);

      res.data.forEach((item) => {
        if (item.attr_vals != []) {
          item.attr_vals = item.attr_vals ? item.attr_vals.split(" ") : [];
          
        }
        //添加一个boole
          item.inputVisible = false
          item.inputValue = ''
      });
      if (this.activeName === "many") {
        this.manyTableData = res.data;
      } else {
        this.onlyTableData = res.data;
      }
    },
    // tab页签被点击的事件
    handleClick() {},
    addDialogClosed() {
      // 监听对话框关闭
      this.$refs.addFormRef.resetFields();
    },
    // 点击按钮添加参数
    addParams() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName,
          }
        );
        if (res.meta.status !== 201) {
          return this.$message.error("数据提交失败");
        }
        this.$message.success("添加参数成功");
        this.addDialogVisible = false;
        this.handleChange();
      });
    },
    // 点击按钮展示修改对话框
    async showEditDialog(attr_id) {
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
        {
          params: {
            attr_sel: this.activeName,
          },
        }
      );

      if (res.meta.status !== 200) {
        this.$message.error("获取参数信息失败");
      }

      this.editForm = res.data;

      this.editDialogVisible = true;
    },
    // 重置修改的表单
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 点击按钮修改参数信息
    editParams() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;

        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
          {
            attr_name: this.editForm.attr_name,
            attr_sel: this.activeName,
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("提交失败");
        }

        this.$message.success("修改成功");
        this.editDialogVisible = false;
        this.handleChange();
      });
    },
    //监听删除按钮的操作
    async removeParams(attr_id) {
      const dele = await this.$confirm(
        "此操作将永久删除该参数, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch(() => {
        this.$message({
          type: "info",
          message: "已取消删除",
        });
      });
      if (dele == "confirm") {
        const { data: res } = await this.$http.delete(
          `categories/${this.cateId}/attributes/${attr_id}`
        );

        if (res.meta.status !== 200) {
          return this.$message.error("删除失败");
        }
        this.$message.success("删除成功");
        this.handleChange();
      }
    },
    // 文本框失去焦点或者摁下
    handleInputConfirm(row){
      // console.log('ok');
      if(row.inputValue.trim().length == 0){
        row.inputValue = ''
        row.inputVisible = false
        return
      }
      //如果没有return就证明输入了数据，需要做后续的处理
     if(row.attr_vals == ""){
       row.attr_vals = []
        row.attr_vals.push(row.inputValue.trim())
        row.inputValue = ''
        this.getedit(this.cateId,row)
        row.inputVisible = false
        return
     }
       row.attr_vals.push(row.inputValue.trim())
        row.inputValue = ''

        this.getedit(this.cateId,row)
        row.inputVisible = false

     
      
    },
    //点击按钮展示文本输入框
    showInput(row){
      console.log(row);
      row.inputVisible = true
      //让文本框自动获得焦点
      //$nextTick方法的作用，就是当页面上的元素被重新渲染后才会执行回调函数中的代码
      this.$nextTick(_ => {
          this.$refs.saveTagInput.$refs.input.focus();
        });
    },
   async getedit(id,row){
     console.log(row);
     const {data:res} = await this.$http.put(`categories/${id}/attributes/${row.attr_id}`,{
         attr_name:row.attr_name,
         attr_sel:row.attr_sel,
         attr_vals:row.attr_vals.join(' ')
       })

       if(res.meta.status != 200){
         return this.$message.error('提交失败')
       }
       this.$message.success('提交成功')
    },
    //删除对应的参数可选项
    handleClose(i,row){

     row.attr_vals.splice(i,1)
     this.getedit(this.cateId,row)

    }

  },




  computed: {
    isBtnDisabled() {
      if (this.selectedCateKeys.length !== 3) {
        return true;
      }
      return false;
    },
    // 当前选中的三集分类id
    cateId() {
      if (this.selectedCateKeys.length === 3) {
        return this.selectedCateKeys[2];
      }

      return null;
    },
    // 动态计算标题的属性
    titleText() {
      if (this.activeName == "many") {
        return "动态参数";
      } else {
        return "静态参数";
      }
    },
  },
};
</script>

<style lang="less">
.cat_opt {
  margin: 20px 0px;
}
.el-tag {
  margin: 10px;
}
.input-new-tag{
  width:120px;
}
</style>